did you remap the ECU?? when you installed the k&N filter and the CW exhaust? i just got my Monster 1100 evo 2013 is the 14 T for less aggressive?
I ran with my CW slipon for 6 months without a remap/flash of the ECU. Bent a valve and while they had it I had them remap it. Took all the pops out, has ran great ever since (over a year ago).
2013 M1100 EVO 20th Anniversary 93/200
2013 Multistrada S Touring
Gone but not forgotten: 916, 748, 749, 999, 996, ST2, Sport Classic 1000, 748 again, 848